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OpenAI claims its latest model helped code itself.
GPT‑5.3‑Codex, its new coding and development model, is apparently the first “that was instrumental in creating itself.” No, that probably doesn’t mean ChatGPT is ready to build its own Skynet, but it can help in debugging and testing:
“The Codex team used early versions to debug its own training, manage its own deployment, and diagnose test results and evaluations—our team was blown away by how much Codex was able to accelerate its own development.”
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